Lubricating wrist pins and the like



Uca y 5 l Rl HxxYAl-E LUBRIGATING WRIST PIN AAND 'mir'V LIKE original 'Filed Feb. 1s 1920 2 shears-Smm 1 d. 2 9 im R. H. YALE LUBRICATING WRIST PIN AND THE' LIKE origial Filed Feb. 1:5.

1920 2 Sheets-Sheet 2 gyn/vanto@ Patented ct. le, i924.

RODNEY H. YALE, OF LINCOLN, NEBRASKA, ASSIGNOR TO* YALE `ANI) HOPEWELLJ COIVI- IPANY, OF` LINCOLN, NEBRASKA, A CORPORATION 0F NEBRASKA.

LUBRIOA'IING WRIST PINS AND THE LIKE.

Original application filed February 13, 1920, Serial No.`358,386. Divided and this application led August 21, 1920.

To all whom. it may concern:

Be it known that I, Renner H. YALE, a citizen of the United States o-f America, and resident of Lincoln, Lancaster County, State of Nebraska, have invented certain new and useful Improvements in and Relating to Lubricating `Wrist Pins and the like, of which the follow-ing i-s a specification (a division of my application S. No. 858,886, filed Feb. 18, 1920, for lubricators).

This invention rela-tes to certain improvements in and: relating to lubricating wrist pins and the like, and particularly to lubricating windmill wrist pins; and the objects and nature of the invention will be readily understood by those skilled in the art in the light of the following explanation of the aC-V companying drawings illustrating what I now believe to be the preferred embodiment or mechanical expression of my invention from among other forms, constructions and arrangements within the spirit and scope thereof.

It is an object of the present invention to provide for the lubrication of wrist pinsby the provision of means adapted to hold` or contain a large body or mass of grease which will supply lubricant to the bearing surface of the pin for a considerable length of time without the necessity of recharging, filling or inspecting the same. y

It is a further object of the invention to provide for the lubrication of wrist pins by means of a large body or mass of grease held against a portion ofthe bearing surface to be lubricated, which body 1s automatically fed thereto by gravity assisted by atmospheric pressure tol supply only such quantity to the bearing as will sufficiently lubricate it and prevent overflow of used gritty, grease back to the main body or mass.

It a. further object of the invention to provide means for lubricating the wrist pins of windmills by the use of a grease container of considerable capacity which is attached to the crank or pitman in which the pin is journaled and from which position the grease will be supplied to the bearing surfaces of pin and crank` in sul'lioient quantities to lubricate the same.

It is af further obj ect of the invention to provide means for lubricating windmill wrist pins which consists of a grease con.-

Serial No. 405,064.

tainer of simple construction and low cost attached to the pitman in which the pin is Journaled, in such a manner, that a side of the pitman forms a side of the container whereby great economy of material and space and simplicity of construction and arrangement is secured in the completeoperative assemlbly.

With the above and other objects in view, the invention consists in certain novel features of construction and in combinations (and arrangements as more fully and particularly set forth and specied hereinafter. l Referring to the accompanying drawmgs:-

Fig. l is an elevation sho-wing in part a windmill head equipped with a lubricator embodying my invention.

Fig. 2 is a vertical longitudinal section through a lubricator of my invention attached to a wrist pin and pitman.

Fig. 3 is a side elevation of a lubricator embodying my invention applied to a wrist pin and pitman, parts of the assembly being shown in dotted lines.

In the accompanying drawings, I show a lubricator embodying my invention applied to the wrist pin of a windmill, but I do not desire `to limit my invention to windmill wrist pins or to the specific embodiment shown and described herein, as it is apparent that my invention is applicable to wrist pin and pitman bearings generally, and is possible of other embodiments without departing from the spirit and scope of the invention.

' In the particular example illustrated, I show a more or less conventional form and construction of the upper part of a windmill well known to those skilled in the art. A suitable supporting `frame or tower l carries the usual base)J on which the windmill head is mounted. The construction of the windmill head provides a bracket 7 upon which a wheel or drive shaft 8 is suitably mounted. A casing 3 extends vertically upward from the head 2 and at its upper end is provided with the slide or guideway 4 in alinement therewith and in continuation thereof. The usual pump or piston rod 5 extends through casing 8 and into the slide or guideway l when it is slidably mounted in and guided by the guideway il.

. i bywheel 9;,

The outwardly extending end or the shaft 8 is provided with. the wheel 9( and the inner 'projectingend otthi's shaft has; the crank disk 1O mounted thereon androtated thereby. -Awrist pin17 is'carried by disk 10 and is journaled inthe lower end of a pitman 18. The upper end of pitman 18 receives a stud shaft or wrist pin 19 ixed kto andprothat extends transversely through the end portionof thel pitnian and the free end of saidv pin :projects outwardly beyond` the opposite side face of the pitman ,from the crank disk ,and is-provided with an enlarged end headgl'r' extending outwardlybeyond saiddgface of .the p'itman. -v

vkMyinvention provides for the automatic lubrication of this wrist pin bearing in the .pitman` 'A narrow vertically` elongated l grease box 2.() is applied to the face of the j pitniany beyond which the wrist pin projects and-the ybox is sov arranged that the projecting wrist pin end` is,l located Within the lower endroif the boxrand approximate-ly sustains and upholds the` massot lubricant within wornout or gritty! lubricant.l

. In the example shown, the lubricantA box -the box and rotates inthe bottom of the f i mass ofgrease. The movement of the wrist pin in thelubricant .and the relative movei ment of the pin and -pitman will feed and carrylubricant into the bearing to lubricate i the-same without such excessive yreed vas will cause-.objectionable dripping Afrom the open end of the bearing adjacent the crank disk 'face'. It will bevnoted that' the lubricant .box is interiorly unobstructed for the free downward settling ofthe. ma-ss or grease f tina/ rein7 and also that the box. receives one end. only of the wrist pin so that reshlubrif cantisconstantly supplied without reuse lof 2O is formed-by a vertically elongated metal box open at one side and the top and fitted on the pitman to snugly fit the side and end edges, thereofbgxand secured .by boltsy 21 through the vside walls .30'. of the box. The louter wallV ofthelubricant box is formed by thev closed side271of`the metal box while the inner wall of the lubricant box is formed Abyfthe side'face 24 of the .'pitman. j

J The lower endI 25 of the lubricant box yformsajbotto-in' pocket 26 tha-t is approxi. mately occupied by the wrist pin` end so that said end is'located in the lubricant andthe lubricantfis constantly held downthereto by itsown weight andr i`s in eiect, sustained thereby.

i l i The open upperend or the box 4is normally closed by a removable cover plate 22 normally secured by` removable screw 23. This cover is arranged to exclude rain and' snow but permit inflow of air to maintain atmospheric pressure in the box above the body of grease. The capacity of this box is suiiicent to receive `a large mass 'of cup or' other grease or thedesired viscosity to function as herei'nbefo're described without adjustment or attentionfor a considerable Deriod of time. The weight of the mass or ody of grease in the box 25 with the atmospheric pressure exerted through the top of the box, under and around cover 22, upon the upper portion Vot the body oi greaseis sufficient to force the lowerportion of the body to and around the enlarged head 17a of the wrist `pin 17 and through the rotation of the pin in the lower portion of the `body or ygrease suiicient grease will be fed into the bearing and onto the pin to properly lubricate the same for a long period of. time'. v Desiring4 to protect my invention in the broadest manner legally possible, `what I claim is:-. t.

1. In combination, ahorizontal shaft hav'- ing an end-crank and outwardly extending wrist pin, )a `pitman having a bearing hole ex tending transversely through its end portion,jsaid pin extending through said hole, and an upright gravityffeed grease supply box enclosing Ithe outer end of said bearing holeonly andfastenedtoand supported on said pitmainwhereby the body of v'thick ,or heavy grease inthe box rests on said pi by gravity to constantly supply Afresh grease to saidbearing without reuse of worn out or gritty` grease discharged `from the bearing.

2. In combination, a horizontal 'shaft having an end crank and outwardly extending wrist pin, a pitrnanhaving a bearing hole extending transversely through its end 'portion, said pin journaled in said bearing hole and having itsfret-i'end extending beyond said pitman, and ya grease supply box enclos: ing the outer end only ofV said rpitm'an and extending to the tree end of said pin', said box being intcri'orly formedv for the free downward movement of grease against said 3. ln combination, a'- h'ori'zontal shaft-having an end erank and outwardly extending wrist pin7 a pitmanhaving a bearing' h'o'le extending transversely tl`i`rot`i`gli its end poi'- tion, said pin journaled in and extending through said hole with Aits free end projecting outlwardlylfbeyond same, and' 'anfu'prightg-av'ity 'feed grease supply box' Hring said *.pitinaii, said ,greas'ebox ei'iclesing the buter 'end or 'said' bearing here and: sar projecting `tree `en oit said pin and 'so airanged tl'ia't said 'pin `will work in thelowei portion of the' mass 0f -f 'rea'fse "iii said box, said bex benigpinrefroi-iy formed for the free damien-u nieves-eht er uw' grease i against said pin by gravity, to supply heavy grease to the bearing without reuse of lubricant discharged from the bearing.

4. In combination, a horizontal shaft having an end crank and outwardly extending wrist pin, a pitman having a bearing hole extending transversely through its end portion, said pin extending through said hole with its free end projecting outwardly beyond the same, and an upright gravity-feed grease supply box fitting said pitman, said box being normally covered but open for air passage above the heavy grease in the box, said grease box enclosing the outer end only of said bearing hole and said projecting free end of said pin and so arranged that said pin will work in the lower portion of the mass of grease in said box, said box being interiorly formed for the free downward movement of the grease against said pin by gravity, the side face of the pitman forming the inner wall of said box, said box having side flanges fitting the longitudinal and end edges of the pitman.

A lubricator for a wrist pin and pit man connection consisting of a grease box open at one side for attachment to a pit` man by its edge walls whereby a side face of the pitman forms the inner wall of the box and the lower end of said box provides a pocket enclosing an end of the wrist pin and pin bearing, whereby the heavy grease settles by gravity on the pin to supply the bearing without reuse of worn grease discharged from the bearing.

6. In combination, a shaft having a crank provided with a wrist pin, a pitman in which said pin is journaled, and an upright gravity-feed container for hard oil or grease, said container open to said pin to feed grease to the bearings therefor by gravity, said container being carried by said pitman, whereby the body of grease settles by gravity onto the pin to supply the bearing without reuse of worn grease discharged from the bearing.

7. In combination, a shaft having an end crank and outwardly extending wrist pin, a pitman having a bearing hole receiving said pin, and an upright gravity feed grease supply box fitting said pitman, said grease box open to said pin and so arranged that said pin will workin the lower portion of the mass of grease in said box, said: box being interiorly formed for the free downward movement of the grease against said pin by gravity and against reuse of worn grease discharged from said bearing, said body of heavy grease resting against said pin to supply said bearing. v

8. In combination, a shaft having an end crank and outwardlyl extending wrist pin, a pitman having a transverse bearing hole, said pin journaled in said bearing hole, and a grease supply box secured to the outer end of said pitman and open to said pin, said box being interiorly formed for the free downward movement of grease against said pin by gravity and. to prevent reuse of worn grease discharged from said bearing.

9. In combination, a pitman having a ing, and an upright grease box of large capacity open to said pin and bearing and constructed and arranged to .require the body of heavy grease to rest against said pin and settle down thereon by gravity as the bearing is supplied without reuse of worn grease discharged from-said bearing, said box being open for passage of air above the bodyl of grease and having an open top and a removable cover, said box being open to fit over the pitman and having side flanges t0 lit the edges of the pitman and be secured thereto.

l1. In combination, a pitman having a bearing, a wrist pin journaled in said bearing, and an upright grease box of large capacity open to said pin and bearing and constructed and arranged to require the body of heavy grease to rest against said pin and settle down thereon by gravity as the bearing is supplied without reuse of worn grease discharged from said bearing, said box being open for passage of air above the body of grease and having an open top and a removable cover, said box being open at the side to receive the pitman which thereby forms one side wall of the grease chamber, the side and bottom walls of the box tightly fitting the side and end edges of the pit- `nonnnr n. YALE. 

